THALLIUM: An experimental facility for simulation of HCLL In-box LOCA and validation of RELAP5-3D system code

Utili, Marco; Venturini, Alessandro; Lanfranchi, Matteo; Calderoni, P.; Malavasi, A.; Zucchetti, Massimo

doi:10.1016/j.fusengdes.2017.05.049

Cited by 9 publications

(6 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 5 presents some of the results of these simulations, showing the pressure trend in the TBM mock-up and in the expansion tank. The difference due to the use of LBE or LiPb is practically negligible and in accordance with the results of Equations ( 3) and (6).…”

Section: Modification Of Relap5/mod33 and Discussion Over The Expecte...supporting

confidence: 89%

“…This section gives a general overview of the facility layout, aiming to give enough details to make the following analyses understandable without the need to read the previous activities on THALLIUM. However, a full description of the facility and its systems is shown in the paper [6] or in the ENEA internal report [18].…”

Section: Brief Description Of the Facility And Of The Testsmentioning

confidence: 99%

“…THALLIUM, described in detail in [6], was used to perform two experimental campaigns, whose results are reported in [7] and in [8]. The rupture of a stiffening plate of the HCLL TBS and the resulting injection of helium at high pressure were simulated.…”

Section: Introductionmentioning

confidence: 99%

“…Each test begins with the opening of the injection valve: high pressure helium is put into contact with low pressure LiPb. In the first part of the transient, LiPb is still practically stagnant, while a single-phase pressure wave propagates at about 1.1 km/s [6] in the facility. Then, helium forces LiPb to move towards the expansion tank by passing through the lower and upper legs, as well as through the bypass line after having broken the rupture disc.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Numerical Simulations with RELAP5-3D and RELAP5/mod3.3 of the Second Experimental Campaign on In-Box LOCA Transients for HCLL TBS

2021

View full text Add to dashboard Cite

In-box LOCA was identified as one of the worst accidental scenarios for the HCLL TBS (Helium Cooled Lithium-Lead Test Blanket System). Aiming to experimentally analyze the consequences of this transient, ENEA designed and built THALLIUM (Test HAmmer in Lead LIthiUM), a facility that reproduces the LiPb loop of the HCLL TBS. Two experimental campaigns were carried out by simulating the rupture of a stiffening plate and the related helium injection in the LiPb loop. The obtained experimental data were used to check the capabilities of RELAP5 system code to reproduce the pressure wave propagation that follows this accident. The first simulations were made with RELAP5-3D using LBE (Lead–Bismuth Eutectic) as a system fluid, as the thermophysical properties of LiPb are tabulated only up to a maximum value of 40 bar in this version of the code. Then, LiPb properties were implemented in RELAP5/mod3.3, after selecting the proper correlations from a literature review. This work summarizes the numerical simulations of the second experimental campaign, which was simulated with both versions of the code. The simulations highlight that the code is able to accurately reproduce the experimental results and that RELAP5-3D is slightly more precise than RELAP5/mod3.3 in predicting the pressure trends.

show abstract

Section: Modification Of Relap5/mod33 and Discussion Over The Expecte...supporting

confidence: 89%

Section: Brief Description Of the Facility And Of The Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Numerical Simulations with RELAP5-3D and RELAP5/mod3.3 of the Second Experimental Campaign on In-Box LOCA Transients for HCLL TBS

2021

View full text Add to dashboard Cite

show abstract

“…This comparison, performed at several working temperatures, allowed also correcting a temperature drift by implementing an empirical formula in the control software. The GEFRAN absolute pressure transducers were installed with threaded connections in IELLLO facility and with flanged connections in THALLIUM test section [23] The threaded connection was not the proper choice for this instrument as LLE was leaking through it after few hours of operation (at about 350°C and 6 bar). Instead, the flanged connections used in THALLIUM guaranteed no leakages over two experimental campaigns and with pressures up to 52 bar (along with about 400°C).…”

Section: Instrumentationmentioning

confidence: 99%